GB1133203A - Improved apparatus for spectral analyses - Google Patents
Improved apparatus for spectral analysesInfo
- Publication number
- GB1133203A GB1133203A GB47865/65A GB4786565A GB1133203A GB 1133203 A GB1133203 A GB 1133203A GB 47865/65 A GB47865/65 A GB 47865/65A GB 4786565 A GB4786565 A GB 4786565A GB 1133203 A GB1133203 A GB 1133203A
- Authority
- GB
- United Kingdom
- Prior art keywords
- beams
- sample
- photo
- shutter
- movement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000003595 spectral effect Effects 0.000 title abstract 3
- 238000004458 analytical method Methods 0.000 title abstract 2
- 238000010521 absorption reaction Methods 0.000 abstract 4
- 230000002596 correlated effect Effects 0.000 abstract 2
- 238000004804 winding Methods 0.000 abstract 2
- 241001463014 Chazara briseis Species 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000011835 investigation Methods 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 1
- 229910052721 tungsten Inorganic materials 0.000 abstract 1
- 239000010937 tungsten Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/12—Generating the spectrum; Monochromators
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
- G01J3/42—Absorption spectrometry; Double beam spectrometry; Flicker spectrometry; Reflection spectrometry
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Spectrometry And Color Measurement (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
1,133,203. Photo-electric spectral absorption analysis. OPTICAL COATING LABORATORY Inc. Nov.11, 1965 [Nov. 24, 1964], No.47865/65 Heading G1A. In a photo-electric spectral absorption investigation a sample beam and a reference beam are passed through a circular filter which is rotated to selected successive wavelength bands from the two beams. A photo-electric device receives the two beams alternately and drives a shutter in the reference beam to balance the two beams. The degree of shutter movement indicates the amount of absorption of a sample in the sample beam and provides a Y-signal to a moving chart recorder, the X-movement of the chart being correlated with the movement of the circular filter selecting the wavelengths. In the figure radiation from a source 11, such as a hermit lamp, black-body or tungsten filament lamp is split into two beams S and R by the twin apertured plate 14 and passed alternately by rotating chopper disc 16 through windows 26 and 27, the reference beam window 27 having a variable shutter 31. A sample cell is placed in the sample beam S either as shown at 61 or as shown dotted at 62. The two beams after passing through the rotating circular filter 38 impinge upon a photo-resistor 48 whose output feeds one winding of a two phase motor driving the shutter 31. The other phase winding is fed from the power supply driving the chopper disc 16. The shutter 31 is thereby driven so as to balance the intensity of the sample and reference beams upon the photo-resistor and the movement is communicated to the pen of the chart recorder 56 as the amount of absorption by the sample. The chart speed is correlated with the speed of rotation of the circular filter, which is of the kind disclosed in Specification 1,117, 772.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US41343264A | 1964-11-24 | 1964-11-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1133203A true GB1133203A (en) | 1968-11-13 |
Family
ID=23637206
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB47865/65A Expired GB1133203A (en) | 1964-11-24 | 1965-11-11 | Improved apparatus for spectral analyses |
Country Status (3)
Country | Link |
---|---|
US (1) | US3437411A (en) |
DE (1) | DE1472198C3 (en) |
GB (1) | GB1133203A (en) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3634694A (en) * | 1969-03-18 | 1972-01-11 | Us Navy | Programmed-response spectral scanning telephotometer system |
JPS5014141B1 (en) * | 1969-05-28 | 1975-05-26 | ||
DE2141364C3 (en) * | 1971-08-18 | 1981-02-19 | Sulzer Morat Gmbh, 7024 Filderstadt | Method and device for recognizing the color of an original |
BE788197A (en) * | 1971-08-31 | 1973-02-28 | Eastman Kodak Co | METHOD AND APPARATUS FOR DETERMINING THE TRANSMISSION SPECTRUM OF A PRACTICALLY TRANSPARENT MEDIUM |
US3740147A (en) * | 1972-01-10 | 1973-06-19 | Farrand Optical Co Inc | Microspectrophotometer with two fields of view |
US3794425A (en) * | 1972-08-22 | 1974-02-26 | Shell Oil Co | Scanning infrared spectroscopic analyzer using rotating variable filter |
JPS545987B2 (en) * | 1972-12-28 | 1979-03-23 | ||
US3810696A (en) * | 1973-02-20 | 1974-05-14 | Waters Associates Inc | Improved analytical apparatus for measuring light absorbance of fluids |
US3897154A (en) * | 1973-11-15 | 1975-07-29 | Roland C Hawes | Sample-background autocancellation in fluid-sample analyzers |
US4125314A (en) * | 1977-05-05 | 1978-11-14 | Dr. Ralph M. Grant Engineering Consultants, Inc. | Beam ratio control for holography |
CA1084726A (en) * | 1978-01-13 | 1980-09-02 | Earl J. Fjarlie | Scanning spectrometer |
US4657398A (en) * | 1985-06-10 | 1987-04-14 | Miles Laboratories, Inc. | Simultaneous multiple wavelength photometer |
US4971437A (en) * | 1986-07-28 | 1990-11-20 | Texaco Inc. | Optical spectral analysis system and method |
US5699156A (en) * | 1994-11-23 | 1997-12-16 | Carver; David R. | Spectrophotometer apparatus with dual light sources and optical paths, fiber optic pick-up and sample cell therefor |
US5969812A (en) * | 1995-10-18 | 1999-10-19 | Carver; David R. | Spectrophotometer apparatus with dual concentric beams and fiber optic beam splitter |
US20050162653A1 (en) * | 2004-01-27 | 2005-07-28 | Carver David R. | Apparatus for measuring spectral absorbance using a unique optical modulator to produce spectral absorbance data and process for making same |
DE102021116581A1 (en) * | 2020-10-16 | 2022-04-21 | Zoller & Fröhlich GmbH | laser scanner |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2269674A (en) * | 1939-08-22 | 1942-01-13 | American Cyanamid Co | Method for photometric analysis |
US2439373A (en) * | 1944-09-27 | 1948-04-06 | American Cyanamid Co | Flickering beam photometer |
US2605671A (en) * | 1948-02-28 | 1952-08-05 | Gen Electric | Spectrophotometer |
US2631489A (en) * | 1949-01-12 | 1953-03-17 | Marcel J E Golay | Monochromator |
US3039353A (en) * | 1954-06-14 | 1962-06-19 | Perkin Elmer Corp | Radiation comparison systems |
US3016800A (en) * | 1958-07-03 | 1962-01-16 | Texaco Inc | Wedge for a double beam spectro-photometer |
US3071037A (en) * | 1958-09-22 | 1963-01-01 | Bausch & Lomb | Ratio measuring spectrophotometer |
US3062088A (en) * | 1959-04-09 | 1962-11-06 | Bodenseewerk Perkin Elmer Co | Null-type radiation analysis system |
FR1314569A (en) * | 1961-12-01 | 1963-01-11 | Optical filters with thin films of non-uniform thickness produced by vacuum evaporation, method and devices for obtaining them, and their applications |
-
1964
- 1964-11-24 US US413432A patent/US3437411A/en not_active Expired - Lifetime
-
1965
- 1965-11-11 GB GB47865/65A patent/GB1133203A/en not_active Expired
- 1965-11-24 DE DE1472198A patent/DE1472198C3/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1472198C3 (en) | 1975-06-26 |
DE1472198B2 (en) | 1974-09-05 |
DE1472198A1 (en) | 1969-01-23 |
US3437411A (en) | 1969-04-08 |
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